‘Abdallah b. ‘Umar told that a man came to the Prophet and said, “Messenger of God, how often shall I forgive a servant?” He gave no reply, so the man repeated what he had said, but he still kept silence. When he asked a third time he replied, “Forgive him (The verb is in the plural) seventy times daily.” Abu Dawud transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب النكاح / 3367
Hadith Gradingالألبانی:لم تتمّ دراسته | زبیر علی زئی:إسناده حسن
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده حسن، رواه أبو داود (5164)»